testdata for IDEA-21602

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/genericsHighlighting/IDEA21602.java

@@ -0,0 +1,17 @@
+import java.util.Collection;
+import java.util.Collections;
+
+public class IDEABug {
+
+  static class ClassA {
+    static <T> void sayHello(Collection<? extends T> msg) {}
+  }
+
+  static class ClassB extends ClassA {
+    static <T extends String> void sayHello(Collection<? extends T> msg) {}
+  }
+
+  public static void main(String[] args) {
+    ClassB.sayHello(Collections.<String>emptyList());
+  }
+}